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ESP32 SIM800L Project for vending machine

€250-750 EUR

Closed
Posted about 4 years ago

€250-750 EUR

Paid on delivery
I am currently working with a vending system and basically need to know remotely how many coins have already been inserted for statistical and consumable management purposes. There is a coin selector that only works with 1 pc of 1€ coin ([login to view URL]) which is connected to the main vending module through 3 wires: Red (12V), Black (GND) and White (Coin Signal Output). Whenever a coin accepted by the coin selector is placed, a voltage of 12V is passed for about 1 second through the White wire, so the ESP32 should detect that pulse. The idea would be to place the equipment connected to the white wire and to react to the insertion of the coin with an SMS to a real time database. I think that for this case the most suitable and cheap would be the ESP32 SIM800L But I amm open to suggestions. The project must include all the software needed for ESP32+Database (preferably exportable to excel or similar) making it workable.
Project ID: 24107436

About the project

25 proposals
Remote project
Active 4 yrs ago

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25 freelancers are bidding on average €488 EUR for this job
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Hello I have got your job posting “ESP32 SIM800L Project for vending machine” and I am very much interested to work in your project. I am a circuit designer and have more than 5 years experience of working with the Analog/Digital Electronics Embedded systems(Arduino,Rasberry pi ,ARM processors ,PIC microcontrollers,ESP WIFI Wireless boards,TFT Touch Displays,All types of sensors and actuators). i have done tons of similar projects So, I think you’ll find that, I have the skills you’re looking for. For more on my skills and successfully finished projects, please have a look on my Profile and Portfolio. I have all the components available here with me so i will develop a working prototype according to your specifications and then send you the code and schematics so things will work for sure.I will remotely guide you and help you build the system on your side. I am always available on Email and Skype. Please have a voice or video chat if necessary. I shall be available round the clock and able to start your project as soon as possible according to you. Thank you for your consideration, Best Regards, Haseeb Shafqat
€500 EUR in 12 days
4.8 (59 reviews)
5.9
5.9
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hello i am a computer engineer,i have masters in computer engineering,i have experience for more than 8 years in arduino and electronics,i can make to u the required system for ur vending machines ,and deliver to u all the required files to implemnt that as well as supporting u till u have it on
€444 EUR in 7 days
5.0 (38 reviews)
5.6
5.6
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We are a team of Electrical and Electronics engineers and we are Excellent in the following areas: • Embedded C Programming. • VHDL/Verilog, LABView • Microcontroller like Arduino, Raspberry Pi, FPGA, AVR, PIC and STM32. • IDEs like Keil MDK V5, ATmel studio and MPLab XC8. • PLCs / SCADA • PCB Designing-Proteus, Eagle. • Multisim • IOT Technologies like Ethernet, GSM GPRS. • HTTP Restful APIs connection for IOT Communications. Also we have good command over report writing, I can show you many samples of our previous reports. Kindly consider us for your project and text me so that we can further discuss specifically about your project's main goals and requirements. We can deliver your project efficiently at a time. If you choose me, I think you won't regret. Best Regards. Also we have good command over REPORT WRITING, We can show you many samples of our previous reports. We can discuss further details in the message box.
€500 EUR in 7 days
4.7 (40 reviews)
5.7
5.7
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Hi! It's absolutely no problem to make your idea work. I have experience in ESP32 device design, both hardware and software, so I can help you with your project. We can discuss more details via chat. Thanks
€300 EUR in 10 days
5.0 (12 reviews)
4.9
4.9
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Easy project for me. I can make a simple online database which records date and time of every coin inserted. Excel file download is a nice option. From the excel you can make any statistics you want
€250 EUR in 3 days
5.0 (4 reviews)
4.2
4.2
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Hey There, We're Industrial Professionals with having more than 5 years of wide experiences in Robotics with enabled IoT, various Electronic circuitry (Low and High Power Electronic circuits), Communication (BLE, RF Modules, WiFi Modules, GSM/GPRS [ SIM800/900], Zigbee etc.) with various Micro-Controllers like Atmega Series, Arm Series, ESP [ESP8266/32/WeMOS/AI-cloud Module] Series. We have completed many satisfied offline projects for various industries and also have past experience of online teaching too. Most of our past project experiences were with IoT Enabled with real-time monitoring in demand on Open Source and Private Web Servers. We have many times Encountered Delay/lag time with Real-time Monitoring with Open Source Web servers and nullified the delay time with certain changes. We have Completed many Power Regulation and Stabilizers, DC-DC Converter, Lithium Ion battery packs, Battery Management System (BMS) etc. Currently we also have an active startup that has served solar industry by its innovation in IoT & Automation in Area like Robotics and various Cloud Platform. For more information you can have a look at our portfolio, that will give you the idea about our experience. We would love to and can help you deliver project on time and with many expert suggestions and hep needed at any time, Start Chat with us to discuss further for Quick and reliably easy solution. Regards Team Light Bulb. **Prices are negotiable** **Project Duration is Negotiable**
€250 EUR in 6 days
5.0 (10 reviews)
3.9
3.9
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Hello, how are you? I hope you have a bright day/evening from your side. I DO NOT OUTSOURCE I have been a freelancer for the past 8 years, I believe that my experience and skill in this background will prove to be of great help to you. Contact me to discuss more on the details
€500 EUR in 7 days
3.9 (8 reviews)
4.2
4.2
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Hello, I am interested in your project and I hope to help you realize it, I am passionate about electronics and embedded development and I hope to share with you my knowledge and experience. I can do this work in 7 days max. so, if you want to work with me I will guarantee you a good job delivered in the good deadline thank you and good luck ^^
€250 EUR in 7 days
5.0 (4 reviews)
3.0
3.0
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Hi, no problem I have a T-Call esp32 board and some experience using esp32. I see several ways: 1) request and response using SMS 2) Using a database like Firebase for saving data 3) Using Google Drive (google apps script) and you have shets with your data
€500 EUR in 7 days
5.0 (4 reviews)
3.0
3.0
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Dear Sir/Madam, Having reviewed your project brief, I write to express my interest in your project. I have the relevant skills and experience to deliver to you high quality work. Kindly reach me via chat for detailed discussion of the project. Regards
€750 EUR in 7 days
0.0 (0 reviews)
0.0
0.0
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Hey! I think I might just be the right guy for your job. I have experience in the Arduino and micro-controllers field, and I think I can get this done for you. Let me know for more info on this.
€250 EUR in 7 days
5.0 (1 review)
0.0
0.0
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Hi... I read the job description, then I have experience & skill in esp32, arduino, microcontrol, raspberry embedded systems and design custom circuit. If you interested to work with me. Please chat for more details. Best regards.
€255 EUR in 6 days
0.0 (0 reviews)
0.0
0.0
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I have manufactured and sold products surveillance and control device by SMS using ESP32 + SIM800L. If you need my help, please inbox me. If you need to authenticate please inbox me, I will send the product image, a piece of code.
€555 EUR in 10 days
0.0 (0 reviews)
0.0
0.0
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I have experience in PCB Design and C programming. Also, i have use several times arduino to make prototypes and firmware tests. I'm from Portugal, so it's possible to have a close collaboration. Values could be reassessed according to the work
€600 EUR in 30 days
0.0 (0 reviews)
0.0
0.0
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Hi, I can do this for you. You have already made all the right hardware selections. The ESP32 is not required unless you require WiFi. You can replace it with an Arduino Uno/Nano. I can configure the module to send an SMS to a presaved number whenever a coin is inserted in the vending system. I can also provide USB interface to export the data to the computer with all relevant software. Software to view the store data/ erase the currently stored records will be provided. You will get timestamp too in the CSV File
€650 EUR in 7 days
0.0 (0 reviews)
0.0
0.0
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Hi I am a computer systems engineer with 5 years of experience in programming microcontrollers and sending information through different types of communication protocols. I have been the leader of projects of iot systems where you must connect device in real time with mobile and web platform.
€600 EUR in 7 days
0.0 (0 reviews)
0.0
0.0
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Hi! I like your project and I am sure I can deliver. I have a lot of experience with ESP32 and I can help you with this, make suggestions and improve the design, let me know if you want to discuss this.
€700 EUR in 25 days
0.0 (0 reviews)
0.0
0.0
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Im a software engineer working actively on industrial internet of things domain. So i can make your request working smoothly. There is a question, is it possible to use data package? Why you want to use SMS?
€300 EUR in 7 days
0.0 (0 reviews)
0.0
0.0
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Dear project owner, I am doing a lot of ESP32 projects all the time, therefore I can offer you a finished working solution. My offer includes: - 2 suggestions on the final concept to be discussed and to choose from - development of needed hardware and software - a working prototype sent to you to test it yourself, - documented source code - ready for shipping within 7 days Please feel free to ask any questions. Best regards Christian
€570 EUR in 7 days
0.0 (0 reviews)
0.0
0.0

About the client

Flag of PORTUGAL
Penela, Portugal
0.0
0
Member since Feb 26, 2020

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